Irrigation weir



Aug- 1930. F. J. PARDINI I 1,772,518

IRRIGATION WEIR Filed March 27, 1928 v 2 Sheets-Sheet 1 ll im I HII I gwumio'r' FRANK J. PAfiDl/V/ l ll l' l Aug. 12, 1930.. Q PARD|N| 1,772,518

IRRIGATION WEIR Filed March 27, 1928 ZSheets-Sheet 2 WIT/"E5555 gwuentoz attowmq PATENT],

' {FR-Anna. PAunI NI, onnnuqnnvAnA This invention; relates to improvementslin irrlgating weirs and has as itsrgeneraIohJect to providea'weir capable of readyinstallation in the endsof turrowsina field of grow.-

ing plants tofbewirrigated at the juncture of the iiurrows with; the irrigating ditch for the I purposeof maintaining a rflow ofwater f rom the ditch to the furrows at a uniformurate of 1 current flow. Iiam awareof the fact that attempts have been heretofore made to pro- Vide for, supply ofwater to furrows from an irrigatingditch, ata uniform rate oficurrent flow hygthe susefof pipes, leading from the ditch and arranged to discharge into the furrowswut it isa wellknown fao't'that such :pipessoon become clogged with silt orrother foreign matter with the result that :thew'alls 1 ofthe irrigating; clitch; become damaged due to the abnormal accumulation of water-them in through the inabilityof the water. to escape through the clogged pipes. Therefore the present-invention contemplates the pro vision of a weir so constructed that it cannothecom eclogged and will at all. times in? sure otllow' offwater, from theirr'igrating ditch to'thefurrows at auniform rateofcu'r- (rentsflowg thusavoiding damage to the walls "readilyemhedded inthe soil atthe juncture of the furrows withlthe irrigating ditch and the 1 relative positions of theentire numh'er of V gg'lweirs readily determined; so that all of the flow of the w rows. "11;.The invention contemplates the provision 1 of a Weir'soconstructed that it maybe readily *of theditchf. p v r i r Another object of'the invention 1s to provide aweirkso constructed that 'itvmay be weirstmay be positioned at the same, elevation' with respect to: the waten'level in the irrigating ditch to insure of uniform current ate'rfrom the ditch into'the furforceddownwardly intothe soil forming the bed of theirrigationclitch and the furrow and-the-establishment of one ofthe weirs at I i that end of each 01": the furrows :in" the field, which f'communicat'es; with the irrigating ditch,"thef weirs being iso constructed as to 1 provide for the flow'ot water past the same 'from theditch anol intotherespective furrow at different rates of currentfiow depending amount of water is supplied, H A e i j, Another object of the invention'is to pro- Vide, ina'fweir of the class. described; novelmay require;

rnurenrrrou'wnm h upon the depth to whichthe weir em'he ddcd inthe soil or,more specifically, the elev'a tion'jfof the weir with respect to the water level in the irrigating ditchfandthe invention has a further obiect to" provide means whereby the Weirs may be quickly andfco'nveniently placed inposition' and aller weirs" accurately: adjusted to QCCL1*'* i3l1- sa'j-hie elevation; so that,,re -ardless of 'therar tions I in depth ofthe ditierentfurrows there will' be precisely the, same rate-of current flowof the furrows thus "insuring; of an even: irr a tionflof. the entire ffield and"; enhance the growthof the crops growing inmthe field."

Another object ofthe' inve t-tourism pro- Vide 'aweir,., for the purpose stated, so "con-- ,structed that. there will 'be nof tendency for the water invthegfurrows dislodging the weir in the event ozfa hackfiow'of the water; Q T Another object of thein'vent-ion is tojprovide a weir so constructed that when a number of the same are positioned atthe "points i i of 'co'fmrnuIiica tion of the furrows with the irri atin-gijdfitch, all oflthe ,weiiis may be quickly; installedfat thesameelevation with respect tothe' water levelinthefditch, and at a greater or less elevation so asto correspondingly vary the volume of waterdeliverefd into all of. the furrows, "the invention therefore contemplating .jarregulation of the weirs in" accordance with'athe character 'oif 'the soili it fleeing-well known that someisoils requiref'a grea'ter supply oft water than others and that the best results may be obtained tin the,grow. ingot the crops, if precisely'the means whereby" the flow of Water past the weir from the irrigationditch to the furrows,

water from the"iirrigatiiigkditch into all of v necessary may becut off, whenever desired, by the mere 7 temporary assemblage, with each weir; ofa water gate which will beheld in place upon thel'weir solely by the pressure of thewater thereagainst therehyfohviating the necessity of employing mechanical means for securing the gate in place'and permitting of its more readily installation and removalasoccasion of what is'claimed.

, edges substantially on the-line place;

conducting recess in the through the top thereof andlocated midway between the downwardly diverging lateral position, in: t

and the communicating ends of the furrows,

' tions' by the numeral In the accompanying drawings: v Figure 1 is a view illustrating two of the weirs embodying the invention, in elevation, and installed in an irrigation ditch at the re ceiving ends of the furrows to be irrigated;

Figure substantially on the line 2-2 of Figure 1 looking in the direction indicated by therar ow vFigure 3 is a view in frontelevation, of one of the weirs,the view also illustrating the cut-offgate offthe weir assembled therewith; Figure 4 is a vertical sectionalview taken 4l4 of Figure 3 and similar to Figure-2 illustrating the gate in fl igufre 5 is a rear elevation of the weir; Figure 6 is a perspective view of the cute weir,embodying the invention, comrisejsa substantially V-shaped body 1 which is preferably of'heavy sheet metal, the body, by reason ofvits peculiar form, having a narrow entering lower end 2 and a relatively wideu per end 3, the peculiar marginal con tour the body providing a v V-shaped water edges of the body; Inorder to reinforce the body and likewise render its install ation' and "removal more convenient and, also toprovide against displacement of the body from its the bed of the, irrigating ditch a flange 5 is formed to extend along the upper of the side portionsof the" bodyand along the downwardly converging inner d"f 'd'l t" lfit -i. e ges 0 SM 8166 por 1011s mg rs men t1on',1s designed to be placed upon'the market tioned portions of the flanges being indicated, by the numeral 6, and the last mentioned porportions 7 of the flange will be of gradually increasing width from a point near the bottom of the recess 4 to'the meeting lower ends of the flanges and likewise it is preferable Y that tliefianges be deflected along curved lines throughout'their lower portions as indicated'by the numeral 8 so that, at'their lower portions and their juncture, the flanges form asubstantially downwardly directed spout 1 through which the water may flow from the irrigation ditch, which is indicated by the reference letterD, into the furrows which are indicated by the referenceletter F, as most clearly shownin Figure 2 of the drawings.

"As; will be evident, by referenceto Figures 2 and 4 of the drawings, the lower portion of the body of the weir is to be forced down- 21 is a vertical sectional vicw'taken:

body opening 7 7, and preferably the Y wardly into .the soil comprising the bed of upon that face of the body of the weir which is presented to the irrigation ditch and along opposite sides of the opening 4, and as will be observed by reference to Figure 1 of the drawings, the invention contemplates embedding, the bodiesin the soil in such manner that corresponding scale marks on all of the weirs will register with the water levelin the irrigation ditch. It will. be observed,"by reference to Figure 1, which figure is intended to illus trate the advantages presented 'by'the'weir embodying the invention, that theleft hand furrow isof less depth than the right hand. furrow 'but thatthe WBiIS are both submerged inthe water in the irrigation ditch to precisely the samedepth, the water level, each instance, registering with the scale mark bearing the index 3, in each instance. Therefore, notwithstanding the difi'e'rencein depth of the furrows, preciselythe same vol ume of ater will flow past each of theweirs, through the recess 4, and into "the respective furrow and th'erefore there will be, throu h a corresponding arrangement of all oftlie 'we'irs, a corresponding rate of current flow of the water into each furrow; It will also be evident'from an inspectlonof Figure 1 and from the'foregoing description that the weirs of the entire series employed in the irrigation of a field, may all be readily adjusted to the '7 same elevationwith respect to the water level a in the irrigation ditch and therefore a. greater or less currentflow of. water (may .be admitted to the furrows in accordance withtdifierences in the condition or' character of: the: soil. Therefore the weir, embodying thepinvenand sold in various localities where the soil conditions varywidely. Q

'. In order that theflow of waterthrough the weirs and from the irrigation ditch into and the plate 11 ofeach gate is formed along ts upper edge with a right angularly pro ectmg'fia'nge 12 which is designed' to rest fiat upon the portions 6 of the flange 5 when and the bottoms of the saidqlo wer portions of the weir I the plate is arranged in place upon theweiras illustrated in Figures 3' and 4 of the draw-' ings. Atlthis point it will be evident that the gates 10 areheld in proper position upon 5 the respectiveweirs through the water pressure in the irrigation ditch, this pressure I beingsufiic'ient to 'hold thegates in place without the necessity of employing any ex 7 traneous fastening means. Therefore, in

:10 the use of the invention, it will be a simple matter toarrange the gates of all of the weirs in place and an equally simple matter toremove the same when it is desired toresume irrigation. w ,i I I a r It will be evident that due. to the provision of the flange extending along the upper edge ofthe body of the weir, the weirmay be-more conveniently embedded in the soiland removed therefrom, the flange, in the first in-A 2o stance, constituting a relatively 'broad' sur- V 1 face against which pressure may be exerted in a downwarddirection to causethe tapered I lower end of the body to enter the'soihand,

' in the latter instance, constituting a portion which may be grasped for the, purpose of either adjustablyelevating or completely ex tracting the, weir. v

Having thus described the invention, what I claim is: i

' A weir of the class described comprising i i a flat substantially V-shapedbody having a i substantially V-"shaped' opening formed in the'top thereof, and graduationseformed,

upon the outer face of the body to permit a series of weirs to. be inserted in aseries of irrigation ditches ata uniform height. p o In testimony whereof I affix my signature;

FRANK J PARDINI. I 

